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raise - send a signal to the caller
#include <signal.h> int raise(int sig);
The raise() function sends a signal to the calling process or thread. In a single- threaded program it is equivalent to kill(getpid(), sig); In a multithreaded program it is equivalent to pthread_kill(pthread_self(), sig); If the signal causes a handler to be called, raise() will return only after the signal handler has returned.
raise() returns 0 on success, and nonzero for failure.
C89, C99, POSIX.1-2001.
Since version 2.3.3, glibc implements raise() by calling tgkill(2), if the kernel supports that system call. Older glibc versions implemented raise() using kill(2).
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